No picture, but power is on...

Check and make sure your fans are working and there is sufficiant cooling to the back of the set. Sounds like it is overheating and going into protection mode.

Hello,

All you need is to open the back cover of the television and check on for dry soldering at the power stage of the printed circuit board, also check for bulged capacitors, if found replace with same rating of voltages , but if otherwise Ur power supply board is dead, u know basic electronics’ and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get ur tv power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Hope this helout, Good luck....

Green light flashes 5 and then red light flashes 6

you may check your lamp first. other than that i would say a faulty mains board.

Symptoms of a Defective or dying Power supplies on LCD TVs.
1. Light(s) on the front panel are behaving not normal example, blinking, amber color or
not steady, fainting, etc.
2. TV not turning ON properly.
3. TV turns OFF by itself.
4. Needs to be unplug to many times to make it work.
5. Humming or high pitch noise heard through speakers or at the back of the TV.

I repair these power supplies. Write to [email protected] if you require further assistance.

Your picture tube is bad,pull back off/ unplug crt broad on neck of tube make sure it does not touch anything ,turn set back on if set stays on tube is shorted!

My RCA G36788LV 36" television won't turn on

you have the famous zenith shorted picture tube

I had the same problem with my TV, It seems the high voltage trasnformer blew which in turn casued the pin cushion?? to blow. It then shuts the tv off to prevent more damage to it. $500 with service charges to get it fixed!